third_party/WebKit/Source/platform/exported/WebMediaStreamTrack.cpp

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "public/platform/WebMediaStreamTrack.h"

#include "platform/mediastream/MediaStreamComponent.h"
#include "platform/mediastream/MediaStreamSource.h"
#include "public/platform/WebAudioSourceProvider.h"
#include "public/platform/WebMediaStream.h"
#include "public/platform/WebMediaStreamSource.h"
#include "public/platform/WebString.h"
#include "wtf/PtrUtil.h"
#include <memory>

namespace blink {

namespace {

class TrackDataContainer : public MediaStreamComponent::TrackData {
 public:
  explicit TrackDataContainer(
      std::unique_ptr<WebMediaStreamTrack::TrackData> extraData)
      : m_extraData(std::move(extraData)) {}

  WebMediaStreamTrack::TrackData* getTrackData() { return m_extraData.get(); }
  void getSettings(WebMediaStreamTrack::Settings& settings) {
    m_extraData->getSettings(settings);
  }

 private:
  std::unique_ptr<WebMediaStreamTrack::TrackData> m_extraData;
};

}  // namespace

WebMediaStreamTrack::WebMediaStreamTrack(
    MediaStreamComponent* mediaStreamComponent)
    : m_private(mediaStreamComponent) {}

WebMediaStreamTrack& WebMediaStreamTrack::operator=(
    MediaStreamComponent* mediaStreamComponent) {
  m_private = mediaStreamComponent;
  return *this;
}

void WebMediaStreamTrack::initialize(const WebMediaStreamSource& source) {
  m_private = MediaStreamComponent::create(source);
}

void WebMediaStreamTrack::initialize(const WebString& id,
                                     const WebMediaStreamSource& source) {
  m_private = MediaStreamComponent::create(id, source);
}

void WebMediaStreamTrack::reset() {
  m_private.reset();
}

WebMediaStreamTrack::operator MediaStreamComponent*() const {
  return m_private.get();
}

bool WebMediaStreamTrack::isEnabled() const {
  ASSERT(!m_private.isNull());
  return m_private->enabled();
}

bool WebMediaStreamTrack::isMuted() const {
  ASSERT(!m_private.isNull());
  return m_private->muted();
}

WebString WebMediaStreamTrack::id() const {
  ASSERT(!m_private.isNull());
  return m_private->id();
}

WebMediaStreamSource WebMediaStreamTrack::source() const {
  ASSERT(!m_private.isNull());
  return WebMediaStreamSource(m_private->source());
}

WebMediaStreamTrack::TrackData* WebMediaStreamTrack::getTrackData() const {
  MediaStreamComponent::TrackData* data = m_private->getTrackData();
  if (!data)
    return 0;
  return static_cast<TrackDataContainer*>(data)->getTrackData();
}

void WebMediaStreamTrack::setTrackData(TrackData* extraData) {
  ASSERT(!m_private.isNull());

  m_private->setTrackData(
      wrapUnique(new TrackDataContainer(wrapUnique(extraData))));
}

void WebMediaStreamTrack::setSourceProvider(WebAudioSourceProvider* provider) {
  ASSERT(!m_private.isNull());
  m_private->setSourceProvider(provider);
}

void WebMediaStreamTrack::assign(const WebMediaStreamTrack& other) {
  m_private = other.m_private;
}

}  // namespace blink